studentkra
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- studentkra
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Comments
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@FrankinAu , look at this topic https://forum.kiwisdr.com/index.php?p=/discussion/3530/antenna-switch-kits-commercially-available
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Maybe you should replace "number" with "quantity"? In some languages translations, it means the same thing. But in English, it has a different meaning. I think ))
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Well, for some reason, the TPS65217 on the Beaglebone board doesn't want to pass the 5-volt power on. I don't know why this might be happening. Try checking the other GPIO pins on the KiwiSDR for short circuits.
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Sorry for the stupid question, but are you sure you connected the KiwiSDR and Beaglebone board correctly? The main Beaglebone power controller must supply 5V_INT power to the KiwiSDR board and to the Beaglebone 5V_SYS board if the supply voltage is …
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Yes. That's how it should be. Current consumption and voltage are normal. I didn't quite understand, do you supply power to the Beaglebone board via the USB connector or via the barrel connector?
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Hi! The fact that the Beagle board does not start with the KiwiSDR board connected indicates that there may be a short circuit on the KiwiSDR board via the 5V_INT circuit. Also check the 3.3V circuit for a short circuit. The resistance of the 5V_INT…
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Since the main interference comes from the electrical wiring, you can try installing such a filter. As far as possible from the entrance of the electrical wiring in a private house. https://forum.kiwisdr.com/uploads/114/6VUVL7TG5E9G.jpg
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@F5AFY , Yes. It seems that these plastic welding machines have a lot of power. I've also studied their specifications. The frequency range is 27-28 MHz. I'm even receiving a fifth-harmonic signal at 137-138 MHz, which interferes with the reception …
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https://forum.kiwisdr.com/uploads/058/QCYVXKU68R3A.jpg Hi! If you are referring to these "scratches" or "worms" on the waterfall, then most likely it is the work of an industrial installation for high-frequency plastic welding. T…
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I've been using SNR level logging, adc_ov, and the number of users for a long time. The charts are available as a web page, and it is located on the Kiwi server in the config folder as simple html file. The code was written a long time ago without u…
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Never trust VM! The best way is to buy another KiwiSDR (or better two, just in case). This is the only way you can safely check bash: echo -n "A1" > /dev/ttyUSB0 ;)
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You just need to send two bytes in ttyUSB. Its very easy. In our country, they usually say "Как два байта переслать" ))) Use simple command echo -n "A1" > /dev/ttyUSB0
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Most likely, the CP2102 driver is already installed in Debian. For example of a Python script: import serial ser = serial.Serial('/dev/ttyUSB0', 115200) ser.write("A1") #A1 select antenna number 1
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Look at this. Page 15. https://forum.kiwisdr.com/uploads/168/Q3Q3GI8H7O9Y.pdf
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Clicking on these two links goes through the captcha and produces the desired results.
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I understood. Thanks!
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Do you mean the DDoS attacks on May 9th, like in the screenshot above?
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Thanks for the answer! Yes, I understand that the old versions of KiwiSDR software have bugs and are not safe. But I (like many other users) use non-original versions of KiwiSDR. And unfortunately, the release of new software for these clones has be…
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Hello. I can't find any information, but I remember for sure that KiwiSDRs with older versions of the software are no longer displayed on the public map. @jks , John, is it enough for KiwiSDR to send the "correct" version of the software t…
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My project of HMC253 and ESP8266 antenna switch on Github. https://github.com/studentkra/HMC253 Not tested yet ))
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Wow! Only 249 dollars. Good price!
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@n8oou Hello, Mike! I have never used the HMC253 before. I have also not studied the documentation for this product in detail. I have a need to switch two antennas to one RSP1A receiver. I used a switch on a relay, but at frequencies above 1500 MHz…
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I post firmware to control PE4302 attenuator via ESP8266 on GitHub now. https://github.com/studentkra/PE4302_attenuator
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I have an ESP running an attenuator right now. I wrote the program for ESP myself. Everything has been working fine for almost a year. It will not be difficult to rewrite the software for managing this switch. And I don't understand why to use a boa…
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I received an HMC253 (DC-2.5 GHz) board today for $8. I also have an ESP8266 for $2. These are the cheapest materials from which you can assemble an antenna switch controlled via USB. https://forum.kiwisdr.com/uploads/982/VRVE2OZL4W11.jpg
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Thank you, John! I was very very interested in investigating this. By the way, while the Kiwi server is not launched, the FPGA consumes about 60 mA. And by the way again ... I was offered to leave this Kiwisdr for myself. And I made a case for two r…
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Today I installed the TLV62569DBVR pulse stabilizer instead of the failed LMR10530Y. Their reference voltage is the same, so there is no need to change the voltage resistive divider. https://forum.kiwisdr.com/uploads/736/Z6RCNTUZ4S17.jpg I used an…
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John, thank you so much for your suggestion! But I want to try to repair the KiwiSRR on my own, using cheap and affordable components. As you can see, I have installed a linear stabilizer to power the FPGA 1.0V. It has been working fine for several …
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If you keep in mind which country I'm in, then I don't have any available options for buying these chips )) Or price is so high, so i can not let myself to by it. Alsow, look at min quanity of order ))
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The LMR10530 pulse stabilizer cannot be purchased. I've also been looking for analogues for a very long time, at least a little similar in pinout. It ended in failure. ChatGPT and DeepSeec couldn't help me either. I ordered several pieces of TLV6256…